diff mbox

[3/5,v2] ASoC: nuc900: Fix platform_get_irq's error checking

Message ID 19f8c64a4720118a6d6c4fedd5f8defa6938d1db.1510982440.git.arvind.yadav.cs@gmail.com (mailing list archive)
State New, archived
Headers show

Commit Message

Arvind Yadav Nov. 18, 2017, 5:27 a.m. UTC
The platform_get_irq() function returns negative if an error occurs.
zero or positive number on success. platform_get_irq() error checking
for zero is not correct.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
---
changes in v2 :
             nuc900_audio->irq_num is unsigned. so handle through signed variable.

 sound/soc/nuc900/nuc900-ac97.c | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

Comments

Russell King (Oracle) Nov. 18, 2017, 8:18 a.m. UTC | #1
On Sat, Nov 18, 2017 at 10:57:53AM +0530, Arvind Yadav wrote:
> The platform_get_irq() function returns negative if an error occurs.
> zero or positive number on success. platform_get_irq() error checking
> for zero is not correct.

IRQ 0 is not a valid interrupt.  The correct test here is <= 0.
Please rework your patches for this.

Thanks.
diff mbox

Patch

diff --git a/sound/soc/nuc900/nuc900-ac97.c b/sound/soc/nuc900/nuc900-ac97.c
index b6615af..71fce7c 100644
--- a/sound/soc/nuc900/nuc900-ac97.c
+++ b/sound/soc/nuc900/nuc900-ac97.c
@@ -345,11 +345,10 @@  static int nuc900_ac97_drvprobe(struct platform_device *pdev)
 		goto out;
 	}
 
-	nuc900_audio->irq_num = platform_get_irq(pdev, 0);
-	if (!nuc900_audio->irq_num) {
-		ret = -EBUSY;
+	ret = platform_get_irq(pdev, 0);
+	if (ret < 0)
 		goto out;
-	}
+	nuc900_audio->irq_num = ret;
 
 	nuc900_ac97_data = nuc900_audio;